riscv/rocket-chip
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clear meta state of silently-dropped, clean evictee, so as to prevent a write race on meta array between probes on evictee and refill grant

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Henry Cook 2013-04-25 17:37:04 -07:00
parent 50ccc20bf3
commit e8b20f3d38
1 changed files with 1 additions and 1 deletions
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2
rocket/src/main/scala/nbdcache.scala
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@ -264,7 +264,7 @@ class MSHR(id: Int)(implicit conf: DCacheConfig, lnconf: LogicalNetworkConfigura
state := s_refill_req
}
}.otherwise { // writback if necessary and refill
state := Mux(conf.co.needsWriteback(io.req_bits.old_meta.state), s_wb_req, s_refill_req)
state := Mux(conf.co.needsWriteback(io.req_bits.old_meta.state), s_wb_req, s_meta_clear)
}
}